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Cooler temperatures returning to the West

5:30 PM, Jul 5, 2013   |    comments
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Significantly cooler temperatures returned to the West on Friday, but heavy rainfall continued across the Southeast. 

A ridge of high pressure that has dominated across the West over the last week has weakened and shifted eastward, back over the Four Corners as onshore flow from the Pacific Ocean strengthened. This brought cooler air onshore, allowing for more seasonal high temperatures to return for most of California and the Pacific Northwest. 

However, inland areas of Southern California and the Desert Southwest saw another hot day with high temperatures just above 100 degrees. These areas remained under excessive heat warnings on Friday. Monsoon moisture over the Desert Southwest and Great Basin maintained scattered showers and thunderstorms throughout the day.

In the East, a stationary front lingered over the Eastern Valleys as high pressure in the Atlantic Ocean pushed more warm and moist air northward from the Gulf of Mexico. This maintained heavy rainfall and strong thunderstorms from the Gulf Coast through the Eastern Valleys on Friday. 

Thus, flooding remained a concern across most of the Eastern third of the nation as the region has seen heavy rainfall for most of the week. Heaviest rainfall was reported in Galliano, La., with a midday total of 1.99 inches. Flash Flood Watches were issued for most of the region in anticipation of another 2 to 3 inches of rainfall.

FRIDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................107 Inyokern, Calif.

HIGHEST HEAT INDEX (DEGREES F)..........................102 Baltimore, Md.

LOWEST TEMPERATURE (DEGREES F)..........................41 Meacham, Ore.

LOWEST WIND CHILL (DEGREES F)...........................24 King Salmon, Alaska

HIGHEST WIND GUST (MPH).................................72 Mt. Washington, N.H.

HIGHEST PRECIPITATION (INCHES)..........................1.99 Galliano, La.


ON THIS DATE....... On this date in 1998, a tropical weather system in the Caribbean Sea and its potentially tremendous rainfall were a possibly welcomed idea to the 110,000 Floridians still evacuated from their homes due to wildfires.

The Associated Press

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